John fishee tayloe



Nd Model.)

J. F. TAYLOR.

I 1 v DOOR BOLT. No. 322-,211. Patented 51113 111885.

WITNESSES: r INVENTO'R: 2 w i B ATTORNEYS.

UNITE STATES PATENT OFFICE.

JOHN FISHER'TAYLOR, or wnsr PARK, nnw Yonx.

DOOR-BOLT.

SPECIFICATION forming part of Letters Patent No. 322,211, dated July 14,1885.

Application filed April 1, 1885.

. in size of the door or casing caused by changes in temperature or theweather.

The invention consists in a door-bolt made with a bar adapted to slideand to be turned axially, and having a cam or eccentric lug, and held tothe door so its lug may enter a recess or pass behind a shoulder forholding the'bar projected into the eye of a catch-plate fixed to thedoor-casing, together with a spring held so as to offer resistance tothe cam-lug as the bolt-bar is turned axially after it has been shotinto the catch, all as hereinafter fully de; scribed and claimed.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure l is a face view of parts of adoor and its j amb or casing,withmyv improved bolt in its preferred form applied. Fig.2 is an end view ofthe bolt with the spring-case in section, and an edge view ofpart of thedoor. Fig. 3 is a horizontal sectional elevation of the door,-its

jamb, and the bolt. Fig. 4. is a face view of the bolt-catch. Fig. 5 isa front view illustrating a modified construction of the bolt-barsupport and a separate spring-case, and Fig. 6 is an inside view of thespring-case shown inFig. 5.

Referring first to Figs. 1 to 4, inclusive, of

the drawings, the letter A indicates -thelock-. ing-bar of the bolt. Bis a plate used in the preferred form of the bolt, and O is the catch ofthe bolt. The bar A is fitted loosely in an eye or bearing, 1), formedon or fixed to the plate B, and has a lever-handle, D, projecting aboutat a right angle from it near its forward end, a, which is adapted toenter the eye a of catch 0. At the forward end of plate 13, preferably,is formed a box-like chamber or case,

(No model.)

E, and a slot, 1), in the front of the plate allows the cam or eccentriclug F,which is fixed to the bolt-bar A about at a right angle with itslever-handle D, to enter. the case E, so that when the handle D isoperated after the end a of bar A is entered within the eye 0 of plate 0the lug F will pass through slot 1) to holdthe bar A projected and willenter case E, and i the end or toe of the cam-lug .F will press againsta spring, G, contained in case E, so that the door H will be forcedclosely against the jamb or casing I as the contact point of the lug Fpasses beyond a line drawn through the center of the bolt-bar A, asshown in Fig. 2, in which position the lever D will be locked by thespring. The spring G offers sufficient resistance to the cam-lug F toforce the end a H of bar A to the outer part of the eye a of catch 0,and hold the door firmly against the rabj betor shoulder t of the casingI, so as to prevent drafts entering around the closed door,

and also prevent rattling of the door, and the spring yields more orless to the pressure of cam-lug F should the wood of the door or itscasing shrink or swell by changes in tempera ture or the weather;hencethe door will always be closed tightly to the casing by the bolt.

The spring against which cam lug F acts may have various forms; but foreconomy in construction and adjustment I prefer to make the spring of ametal plate bent into ['1 form,

so that it may be held in place by hanging it on one of thefastening-screws J, which pass through the case E into the edge of thedoor to hold the forward end of the bolt to the door, the other end ofthe bolt-being held to the door by screws K, passed through plate B intothe face of the door. Should the spring be fixed to the back of plate B,the back wall, 0, of the case E, against which well one limb of thespring G (shown) is forced by cam-lug F, may be dispensed with;hence thecase E is not essential to the successful working of the bolt. To unboltthe door, it only is necessary to swing lever Dto withdraw cam-lug. Ffrom slot b, as in dotted lines in Fig. 2, and the bolt-bar A then maybe slid back clear of catch G, and so as to be supported by the eye I)of plateB, which plate may have more than one eye b to support the bar'A, if desired. I

make the catch 0 with its eye a formed at one angle of a dovetail-shapedplate, a, as in Fig. 4, so that when the plate is let into the side ofthe rabbet of the door-casing I its shape will of itself offer thenecessary resistance to pressure tending to burst the door open from theoutside, and little or no strain will be brought upon the screws 0",passed through holes 0 into the casing.

As shown in Figs. 5 and 6, the plate B may be dispensed with, and asmall plate, B, having an eye, I), to support the bolt-bar A, may befastened to the door H by screws 70, and the spring-case then will bemade in a separate piece, as at E, and will be fitted over a recess outin the edge of the door." The case E has a couple of lugs, e e, to holdthe spring G in place against the inward pressure on it of the cam lug Fof the bolt-bar A, the said lugs e substituting the back wall, e, ofcase E, and the case E is to beheld to the door H by screws J, on one ofwhich the spring G may be held, substantially as above described. Aplate-spring may of course be fixed to one of the face-fianges e of caseE to receive the backprcssure of the cam-lug F of the bolt bar, as willreadily be understood.

it is obvious that the bolt is very simple in construction, inexpensiveto make and put in place, and is positive in action and effective anddurable in use.

The bolt may be used upon doors, sash, blinds, or other objectsrequiring a fastening such as the bolt affords.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

l. A door-bolt comprising a locking-bar forth.

2. The combination, in a door-bolt, of a bar, A, provided with a lever,D, or equivalent means for turning it axially, and having a cam-lug, F,a plate, B, having an eye, I), to

support bar A, and a slot at b for the passage of lug F, and a springsupported by and back of the plate B, so as to offer resistance to the"cam when the bar Ais entered into the catchplate and turned,substantially as herein set forth.

3. The combination, in a door-bolt, of'abar,

A, provided with a lever, D, or equivalent means for turning it axially,and having a cam-lug, F, a plate, B, having an eye, I), to support barA, and a slot, 1), for the passage of lug F, and said plate having acase, E, at its outer end, and aspring, G, made in (1 form and heldwithin case E, so as to offer resistance to the lug F when the bar A isentered into the catch-plate and turned, substantially as herein setforth. 4. As an improved article of manufacture, a catch for a door-boltmade with its bolt-barreceiving eye formed on a dovetail shaped plateadapted to be let into the casing, substantially as herein set forth.

JOHN FISHER TAYLOR.

Witnesses:

J OHN MOCABE, HENRY F. BIssELL.

